src/subtitle/formats/ass.ts
'use strict';
import xml2js = require('xml2js');
/**
* Converts an input buffer to a SubStation Alpha subtitle.
*/
export default function(config: IConfig, input: string|Buffer, done: (err: Error, subtitle?: string) => void)
{
xml2js.parseString(input.toString(), {
explicitArray: false,
explicitRoot: false
}, (err: Error, xml: ISubtitle) =>
{
if (err)
{
return done(err);
}
try
{
done(null, script(config, xml) + '\n' +
style(xml.styles) + '\n' +
event(config, xml.events));
} catch (err)
{
done(err);
}
});
}
/**
* Converts the event block.
*/
function event(config: IConfig, block: ISubtitleEvent): string
{
const format = 'Layer,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text';
return '[Events]\n' +
'Format: ' + format + '\n' + [].concat(block.event).map((style) => ('Dialogue: 0,' +
style.$.start + ',' +
style.$.end + ',' +
style.$.style + ',' +
style.$.name + ',' +
style.$.margin_l + ',' +
style.$.margin_r + ',' +
style.$.margin_v + ',' +
style.$.effect + ',' +
style.$.text)).join('\n') + '\n';
}
/**
* Converts the script block.
*/
function script(config: IConfig, block: ISubtitle): string
{
return '[Script Info]\n' +
'Origin: Downloaded from Crunchyroll.com by ' + config.user + '\n' +
'Title: ' + block.$.title + '\n' +
'ScriptType: v4.00+\n' +
'WrapStyle: ' + block.$.wrap_style + '\n' +
'PlayResX: ' + block.$.play_res_x + '\n' +
'PlayResY: ' + block.$.play_res_y + '\n' +
'Subtitle ID: ' + block.$.id + '\n' +
'Language: ' + block.$.lang_string + '\n' +
'Created: ' + block.$.created + '\n';
}
/**
* Converts the style block.
*/
function style(block: ISubtitleStyle): string
{
const format = 'Name,Fontname,Fontsize,PrimaryColour,SecondaryColour,' +
'OutlineColour,BackColour,Bold,Italic,Underline,StrikeOut,ScaleX,' +
'ScaleY,Spacing,Angle,BorderStyle,Outline,Shadow,Alignment,' +
'MarginL,MarginR,MarginV,Encoding';
return '[V4+ Styles]\n' +
'Format: ' + format + '\n' + [].concat(block.style).map((style) => 'Style: ' +
style.$.name + ',' +
style.$.font_name + ',' +
style.$.font_size + ',' +
style.$.primary_colour + ',' +
style.$.secondary_colour + ',' +
style.$.outline_colour + ',' +
style.$.back_colour + ',' +
style.$.bold + ',' +
style.$.italic + ',' +
style.$.underline + ',' +
style.$.strikeout + ',' +
style.$.scale_x + ',' +
style.$.scale_y + ',' +
style.$.spacing + ',' +
style.$.angle + ',' +
style.$.border_style + ',' +
style.$.outline + ',' +
style.$.shadow + ',' +
style.$.alignment + ',' +
style.$.margin_l + ',' +
style.$.margin_r + ',' +
style.$.margin_v + ',' +
style.$.encoding).join('\n') + '\n';
}